I, the deposed prince, signed in the imperial mausoleum for a thousand years

Introduction: Traveling to a world where immortals and demons are rampant, Qin Feng has become the deposed prince. He can only guard the imperial tomb and spend his life sloppy.But I never expected to get the sign-in system by accident. As long as you sign in at different places, you will get various rewards. "Ding! Master signed in at the Imperial Mausoleum and obtained the Primordial Chaos Sword Body!" "Ding! Master signed in at the Pill Hall and obtained the Bone Spirit Lenghuo!" "Ding! Master signed in at the Library Pavilion and obtained the Longevity Sutra!"...and so on, Qin Feng has signed in for many years.Until one day, foreign tribes invaded and the dynasty faced annihilation.A sword cry suddenly came from the imperial mausoleum.The whole world is shocked!